FCC ID T2C-S6621S1
Module Device
by YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD.
Grantee Code: T2C Product Code: S6621S1
Latest application date: 2026-09-23
FCC ID Device Details
| FCC ID | T2C-S6621S1 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | T2C |
| Product Code | S6621S1 |
| Applicant Business | YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. 🇨🇳 |
| Related Domains |  yealink.com  iconsigh.com |
| Equipment Class | Module Device |
| Test Firm | Bay Area Compliance Laboratories Corp (Shenzhen) |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2412-2462 MHz | Original Equipment | 2026-09-23 |
| 5745-5825 MHz | Original Equipment | 2026-09-23 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User Manual | Users Manual | 2026-09-23 | PDF 2.3 MB |
| User Manual Warning | Users Manual | 2026-09-23 | PDF 121.9 KB |
| Internal Photos | Internal Photos | 2026-09-23 | PDF 4.3 MB |
| External Photos | External Photos | 2026-09-23 | PDF 1.3 MB |
| Label and label location | ID Label/Location Info | 2026-09-23 | PDF 3.3 MB |
| Test Setup Photos | Test Setup Photos | 2026-09-23 | PDF 1.5 MB |
| Test Setup Photos | Test Setup Photos | 2026-09-23 | PDF 1.4 MB |
| 5G WIFI Test Report Part 1 | Test Report | 2026-09-23 | PDF 5 MB |
| 5G WIFI Test Report Part 2 | Test Report | 2026-09-23 | PDF 4.9 MB |
| 5G WIFI Test Report Part 3 | Test Report | 2026-09-23 | PDF 4 MB |
| Antenna Specification | Test Report | 2026-09-23 | PDF 259.6 KB |
| Antenna Specification | Test Report | 2026-09-23 | PDF 248.8 KB |
| DFS Test Report | Test Report | 2026-09-23 | PDF 1.1 MB |
| Test Report - BLE | Test Report | 2026-09-23 | PDF 1.9 MB |
| Test Report - WIFI | Test Report | 2026-09-23 | PDF 4.2 MB |
| Attestation Letter | Attestation Statements | 2026-09-23 | PDF 9.3 KB |
| Attestation Letter-2.911(d)(5)(i) | Attestation Statements | 2026-09-23 | PDF 80.3 KB |
| Attestation Letter-2.911(d)(5)(ii) | Attestation Statements | 2026-09-23 | PDF 92.5 KB |
| US Agent Attestation Letter | Attestation Statements | 2026-09-23 | PDF 64.9 KB |
| FCC Agent Authorization Letter | Cover Letter(s) | 2026-09-23 | PDF 20 KB |
| FCC Confidentiality Letter | Cover Letter(s) | 2026-09-23 | PDF 110.4 KB |
| Module Approval Request Letter | Cover Letter(s) | 2026-09-23 | PDF 43.4 KB |
| RF Exposure Information | RF Exposure Info | 2026-09-23 | PDF 170.5 KB |
| Block Diagram Metadata only | Block Diagram | PDF 498.9 KB | |
| Schematics Metadata only | Schematics | PDF 485.9 KB | |
| Operation Description Metadata only | Operational Description | PDF 9.1 KB | |
| Software Security Description Metadata only | SDR Software/Security Info. | PDF 82.9 KB |
Application Information
| Application ID | KL9v5nBxPjptu3jBSNNW1Q== |
|---|---|
| Final Action Date | 2026-09-23 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0014702682 |
| Model | S6621S1 |
| Frequency Range | 2412-2462 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Module Device |
| Responsible Party | Stone Lu, chenjl@yealink.com , 86-592-5702000 |
| Non-Technical Contact | Benjamin Kaur, Iconsigh, benjamin.kaur@iconsigh.com , (408) 320-9867 |
| Test Firm | Nana Liu, Bay Area Compliance Laboratories Corp (Shenzhen), qa.sz@baclcorp.com  , 86-755-33320018 |
| TCB Email | bacl.regulatory@baclcorp.com |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Single Modular Approval |
| Composite Device | Yes |
| Cognitive Radio | No |
| Authorization Waiver | No |
| Authorization Waiver Approved | No |
| Section 5301 Certification | Yes |
| Related OET Knowledge DataBase Inquiry | No |
Applications
| Application ID | Date | Purpose |
|---|---|---|
| KL9v5nBxPjptu3jBSNNW1Q== | 2026-09-23 | Original Equipment |
| E4sCpX207DDU0J9ESketfA== | 2026-09-23 | Original Equipment |
Equipment Authorization
Grants
TCB Grant - Application KL9v5nBxPjptu3jBSNNW1Q==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Bay Area Compliance Laboratories Corp. 1274 Anvilwood Avenue Sunnyvale, CA 94089 |
Date of Grant: 09/23/2026 Application Dated: 09/23/2026 |
| YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. |
| No.666 Hu'an Rd. Huli District Xiamen City, Fujian |
| Huli District, |
| Xiamen City, Fujian, China |
| Attention: Stone Lu , Vice General Manager |
| NOT TRANSFERABLE |
| EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below. |
| FCC IDENTIFIER: | T2C-S6621S1 |
| Name of Grantee: | YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. |
| Equipment Class: | Digital Transmission System |
| Notes: | Module Device |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2412.0 - 2462.0 | 0.084 | ||
| CC | 15C | 2402.0 - 2480.0 | 0.0024 |
| Single Modular Approval. Output power listed is conducted. This grant is valid only when the module is sold to OEM or OEM integrator. This device must be installed to provide a separation distance of at least 20cm from all persons, and only the antenna tested with the device or similar antennas with equal or lesser gain may be used with this transmitter. Co-location of this module with other transmitters that operate simultaneously is required to be evaluated using the FCC multi-transmitter procedures. The integrator must be provided with specific information required to satisfy RF exposure compliance for final host devices and installations. Compliance of this device in all final host configurations is the responsibility of the Grantee and may require the submission of a Class II permissive change or new application. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application E4sCpX207DDU0J9ESketfA==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Bay Area Compliance Laboratories Corp. 1274 Anvilwood Avenue Sunnyvale, CA 94089 |
Date of Grant: 09/23/2026 Application Dated: 09/23/2026 |
| YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. |
| No.666 Hu'an Rd. Huli District Xiamen City, Fujian |
| Huli District, |
| Xiamen City, Fujian, China |
| Attention: Stone Lu , Vice General Manager |
| NOT TRANSFERABLE |
| EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below. |
| FCC IDENTIFIER: | T2C-S6621S1 |
| Name of Grantee: | YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. |
| Equipment Class: | Unlicensed National Information Infrastructure TX |
| Notes: | Module Device |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15E | 5180.0 - 5240.0 | 0.027 | ||
| CC | 15E | 5260.0 - 5320.0 | 0.013 | ||
| CC | 15E | 5500.0 - 5720.0 | 0.012 | ||
| CC | 15E | 5745.0 - 5825.0 | 0.011 |
| Single Modular Approval. Output power listed is conducted. This grant is valid only when the module is sold to OEM or OEM integrator. This device must be installed to provide a separation distance of at least 20cm from all persons, and only the antenna tested with the device or similar antennas with equal or lesser gain may be used with this transmitter. Co-location of this module with other transmitters that operate simultaneously is required to be evaluated using the FCC multi-transmitter procedures. The integrator must be provided with specific information required to satisfy RF exposure compliance for final host devices and installations. Compliance of this device in all final host configurations is the responsibility of the Grantee and may require the submission of a Class II permissive change or new application. This product supports 20 MHz, 40 MHz and 80 MHz bandwidth modes. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |